Container manufacture



Mmh 1o, 1942.

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Patented Mar. 10, 1942 CONTAINER. MANUFACTURE Walter E. `Sooy and Rudolf William Von Sydow,

Middletown, Ohio, assignors to The Gardner- Richardson Company, Middletown, Ohio, a. corporation of Ohio Application November 22, 1939, Serial No. 305,661

11 claims.

'Ihis invention relates to containers and more The principal object of the invention is to provide'a process for the continuous, high speed and quantity production of container bodies formed from blanks of paper material or the likeand `having an inwardly recessed shoulder adjacent the ends of the bodies providing for receiving end closures thereon.

A further object is to provide a simple and efiicient process for cutting a plurality of blanks suitable for forming such container bodies from a. web of paper material such as 'a relatively large sheet or roll of' paper and for simultaneously Awinding the plurality of cut blanks into the form of the container bodies. A further object of the invention is to provide a process for forming paper containers in which an inner portion of the body wall forms an inwardly recessed shoulder at one or-both ends of the container body for receiving an end closure thereonV and an outer portion of the body Wall provides for securing the end closure in position on the shoulder.

A further object is the provision of apparatus providing for cutting a paper web into blanks of predetermined size and shape and for forming the blanks into container bodies of the character and in the manner hereinabove set forth.`

A still further objectA is the provision of relatively simple and inexpensive apparatus for turning down the ends of the formed container bodies to provide for securing the end closures in proper positioning thereon. v

Other objects and advantages will be apparent from the following description, the appended claims and the accompanying drawings, in which Fig. l is an elevational view, partly diagrammatic, of a machine providing for cutting the container blanks and winding the same into the form of container bodies in accordance with the present invention;

Fig. 2 is a fragmentary plan view showing a portion of the paper web and-a portion of the supporting table below the web and illustrating the mannerin which the web is cut to provide the body blanks;

Fig. 3 is a fragmentary vertical section taken through one of the blank cutting knives and its A cooperating die on the line 3--3 of Fig. 1;

Fig. 4 is a fragmentary vertical section taken through one of the blank cutting knives and its cooperating die on the line 4-4 of Fig. 1;

Fig. 5 is a part elevational part sectional view of an apparatus providing for turning down the ends4 of the formed container bodies to secure the end closures in proper positioning;

Fig. 6 is `a fragmentary sectional View taken on the line B--B of Fig. 5;

Fig. 7 is a longitudinal sectional view through the container body at the completion of the forming operation and showing the closure member in position where it can be inserted in place;

Fig. 8 is a longitudinal sectional View showing a portion of the complete container witth an end closure inserted and secured in position;` and.

Fig. 9 is a fragmentary longitudinal sectional view showing a modified end closure secured in position on the container body.

Referring to the drawings which illustrate preferred embodiment of apparatus adapted to carry the invention into effect, there is shown a machine l0 which takes a web Il of paper material, cuts the same into body blanks each having a portion of reduced width at the leading ends thereof, and winds the blanks into the form of convolute container bodies with the reduced portion of the blank forming the interconvolution of the body to provide inwardly recessed shoulders at the ends of the bodies. In the illustrated machine the paper web is supplied from a large jumbo roll i2 and has a width sufficient to provide a plurality of blanks arranged side by side, and the machine provides for simultaneously winding the plurality of blanks into convolute container form. The web il passes under a guide roll I3, and a pair of feed rolls I4 and I5 provide for unwinding the paper from the roll l2 and for feeding it to a pair of feed rolls I6v and il which rotate at the same peripheral 'speed as the rolls I4, I5. After a length of paper material suflicient to form' a multi-wall tubular body of the desired diameter 'and number of convolutions has been fed forwardly the feeding operation terminates and a pair of cooperating shearing knives2ll and 2| operate to cut off the desired length of paper. In the illustrated embodiment of the invention the web is cut into lengths suitable for forming convolute bodies having a Wall comprising three complete turns plus a small overlap of the paper material, and when this severed length of paper has been fed forward by the rolls I6 and Il the forward or leading end of the web il lies at the point marked A in Fig. 1 of the drawings, the trailing end being in feeding engagement with rolls l B, l1.-

During the dwell of the paper web with the I wound into the container form.

leading end at the pointfA, a plurality of longitudinally extending knives 25 operate on the are so arranged that when` the cut-oir length of paper web is subsequently slit into a plurality A of individual body vblanks as will be hereinafter described, the slotted or cut-awayportions will be at the forward marginal edges of the individual blanks and provide a single portion of predetermined substantially uniformly reduced width at tlie leading end of each of the blanksLthe remainder of the blanks being of substantially uniform full width providing for forming the body part and the extending end portions. Thus when the body blanks are wound into convolute container form the portions of reduced width at the leading ends of the blanks provide for forming inner recessed shoulders at the ends of the wound bodies.

Referring to Fig. 2there is shown a portion of the paperwe'b immediately following the cut-olf vand slotting operations, and in this ligure the lines 28 designate the leading end of the web,

the line 29 designates the trailing end of a sheet which has just been severed by the cut-olf knives 28 and 2|, and the dashed lines 30 indicate the lines along which the web is to be subsequently slit to sever the web into the plurality of individual body blanks. As shown the slots'3| lie along' ing a length suilicient to form an entire convo-l 'and an inwardly extending portion 60.

the slotting knives. As shown the plate -45 is provided with flanged openings for receiving the die blocks 44 and the dies are slotted as indicated at 41 to provide parallel cuttingedges 48 and 49 which cooperate with the cutting edges 35 and 35 of the knives and curved cutting edges 58 and 5| which. cooperate with the curved portions 38 and 39 of theslotting knives. Screws 52 provide forretaining the cutting dies 44 in position in the plate 45. The portions of the paper web which are removed by the slotting knives to provide the slots 3|' drop through the slots 41 of the cutting dies 44 and may be removed from the machine'by suitable means such as an endless belt. On either side of the paper web it ls only necessary to provide a slot that has onehalf the width of the slots 3| as indicated at 53 in Fig. 2 and, accordingly, the outermost slotting knives 25 and cutting dies 44 at the outside edges of the machine may be correspondingly modified so as tol remove only the required amount/of paper material from the side edges of the paper Operation of the slotting knives 25 is effected by means of a cam member 55 which is mounted upon a shaft 51 and` is provided with a grooved cam track 58 comprising a concentric portion 53 The shaft 51 may comprise any suitable shaftof the drive mechanism for the machine which makes one complete revolution for each cycle of operation of the unwinding rolls 44 and I5 and the Y. A bell crank 62 4is pivotally mounted at 63 to .a fixed portion of the machine framev and has an arm 54 provided with. a roller 55 which is received within the cam groove .58 and an arm 55 which is pivotally connected at 51 to an upwardly extending lini: 58.

,The link 58 is pivotally connected at 69, to a lution of the container body when the blanks are In the illustrated embodiment of the invention in which the body blanks have a length suicient to provide three complete 'convolutions plus an over- 'lap when wound into the container form, the

handle portion 31 where they curve inwardly and upwardlyas indicated at 38 and 38 and merge into a single cutting edge at the point 48. The curvature of the portions 38 and 39 is such that upon operation of vthe knives the inner ends of the slots 3| of the web will be rounded as in dicated at 4| in Fig. 2 to facilitate the folding over of the wider-portions of the severed blanks during the subsequent vspinning operation hereinafter described. The width of .the knives 25 and hence the spacing between the cutting edges 35 and 35 is such as to provide the desired reduction in the width of the portions 32 of the blanks to cause the outer convolutions of the wound body to have suflicient length to be bent over and effectively secure the end closures in place on the internal shoulders provided by the reduced portions 32.

The slotting knives 25 cooperate wit-h a pluserted in the web supporting plate of the marality of cutting dies or blocks 44 which are in.

chine |0 in 'proper positioning beneath each of 75 lcam groove 58 the slotting knives 25 will remain in the raised or inoperative position shown, but

when the roller 55 enters the inwardly extending portion '58 of the cam groove the link 58 and crank arm 10 will be depressed by the bell crank 52 to cause rotation of the shaft 1I and operation on the slotting knives 25 to effect the slot.

ting of the paper web. The slotting knives thus operate with a shearing action and progressively cut the paper web from the leading'edge at "A f in Fig. 1 to the curved portions 4| at the inner ends of the slots. Immediately following the slotting operation the portion 50 of the cam4 groove returns the slotting knives to the raised or inoperative position. The angular positioning o f the inwardly extending portion 50-of the.

cam groove 58 is such as to effect the slotting operation of the knives 25 in coordinated timed relation with respect to the machine as a' whole and during the time that the paper web dwells for cut-off with its leading edge at the point A" of Fig. l as above described.

Following operation of the cut-oil" knives 20 and 2| and the slotting knives 25, during which time the web remains stationary', the feed rolls |5 and'll and another pair of feed rolls 14-and 15 resume operationv vand feed thel cut-offv length ofpaper material to 'a Winding mandrel assembly indicated generally by the referenceA numeral 18. The unwinding rolls I4 and l5, however, continue to remain stationary for a further period of time sufficient to provide a desired spacing between the length of paper which has just been cut-off and the next length of paper, after which the rolls i4 and I5 resume operation to feed a new length of the web to the point A.?

As described above lthe cut-off and' slotted length of paperV web is slit through the slots 3l and along the dashed lines 30 of Fig. 2 to sever the web into a plurality of individual body blanks each having a portion of reduced width 32 at the leading end thereof. For this purpose a plurality of-rotary cutters 11 cooperating with a roller 18 are spaced transversely of the' machine intermediate the feed lrolls I6 and l1 and the feed rolls 'I4 and 'l5 and provide vfor slitting the cut length of paper into the plurality of body blanks. A plurality of individual body blanks arranged side by side across the width of the machine are thus fed to the mandrel assembly 'I6 for winding simultaneously thereon into the form of multi-walll l convolute container bodies having the portions 32 of reduced width innermost and towards the mandrel and forming the inner convolution of the wound body. The spacing between the rotary slitting knives 11 and thus the Width of the `blanks between the lines 30 of Fig. 2 is such as 85 comprises a winding station and it is here that the mandrel receives the plurality of body blanks asthey are fed forwardly by the feed roll pairs I6, Il and 14, 15 and winds the blanks into convolute container form. Suitable grippers 9D are provided on the mandrels for receiving the leading edge of the bodyblanks and retaining the same during the winding operation.

To provide for retaining the body in the wound `form a pair of adhesive applying rolls 93 and 94 receive adhesive from a tank 95 and apply it to the body blanks during the winding of the blanks on the mandrel at the station 85, the roll 94 being actuated into adhesive transferring contact with the blanks on Athe mandrel at properly co- Y ordinated stages in the Winding operation. The operation of the rolls 93 and 94 is preferably so controlled as to apply the adhesive between all overlapping surfaces of the body wall and throughout the entire length of the wound body including the portions of the outer convolutions which extend outwardly beyond the inner vconvolutions at the ends of the body. The roll 94 thus has a length or width sufficient to apply adhesive across the entire width of the body blanks including the wider portions thereof, and is preferably actuated into contact with the blanks as'soon as the leading ends of the inner convolution come opposite th'e roll. During the application of adhesive to the reduced portions 32 of the body blanks the transfer of adhesive to the portions of the mandrel which are exposed by reason vof removal of th'e slotted portions 3l of the blanks is prevented by the thickness of the paper web which maintains a suitable spacing between th'e roll 94 and the exposed p0r-` tions of the mandrels. If desired, however, a

plurality of scrapers or the like positioned along the length of the roll 94 opposite the exposed portions of the mandrel may be actuated to scrape adhesive from the roll 94 during the application of the adhesive to the narrower portions of th'e blanks. In the preferred embodiment of the invention a label is applied to the outer surface of the wound body and to provide for adhesively securing the label in position on the body the contact between the adhesive Aapplying roll 94 and the body blanks at the station is preferably continued for at least one complete revolution of the mandrel after the winding of the bodies has been completed to effect 'the application of adhesive on the entire exterior surface of the wound bodies.

To effect the winding of the container bodies on the mandrel at the winding station 85 each of the mandrels is supported in the mandrel assembly frame for rotation about its own axis and a suitable means is provided at the winding station for effecting a predetermined rotation of the mandrel during its dwell thereat. Suitable means may also be provided for effecting a predetermined rotation of thevmandrels about their own axes during dwell at one or more of the other `stations such, for example, as the station 81 wh'ere a'label is preferably applied to the adhesively coated outer surface of the formed bodies. The label preferably has a width corresponding to the entire extended length or height of the wound bodies so that when applied to the body it will extend entirely to the end edges of the outer convolution and cover the portions of the body wall that extend outwardly beyond the recessed shoulder of the inner convolution at either end of the body. After the bodies have been wound on the mandrel at the winding station 85 the mandrel assembly frame is intermittently rotated as described above to successively move the mandrel with the wound container bodies thereon through each of. th'e sta'- tions 8B, 81 and 88 andl to successively move each of the other mandrels into the winding station 85 for the winding of container bodies thereon; it being understood that suitable means (not shown) is provided for effecting such indexing movement and dwell of the mandrels at the several stations in coordinated timed relation with the operation of the other portions of the machine.

The station 88 comprises a stripping station at which suitable means for freeing one end of the mandrels and effecting stripping of the wound .container bodies therefrom are provided. During indexing movement and dwell of the mandrel assembly a continuous control is maintained-over the angular positioning of each of the mandrels so 'that the seams of the container bodies will tion. A more detailed description of such mandrel assembly and its operation is contained in the patent to Scusa et al No. 2,163,318 and the copending application of Scusa Serial No. 250,-

477, led January 12, 1939, both of which are` assigned to the same assignee as the present invention, and to which reference is herein made for a more complete understanding of the machine and its operations.

When the container rbodies are stripped fromv the mandrel of the forming machine illthey will have a form corresponding to that shown in Fig.'

7 of the drawings inwhioh the portion of reduced vwidth 32 of the body blanks forms the .inner convolution of the wound body and provides an internally recessed shoulder at each end of the body and the outer convolutions |0| and '|02 extend outwardly beyond the shoulder |00 at each end of the wound body. A label |03 is shown as secured to the outer surface of the outermostconvolution |0| and as described above preferably extendsover the full height' of the outer convolution. including the outwardly extending end portions as shown in' Fig. 7. An end closure |05, Fig. 8, is then inserted in the open end of the container body and is seated upon the internal shoulders |00 provided by the inner convolution 32 of reduced height or length. The outwardly extending portions of the outer convolutions |,0I `and |02 together with the portion of the label secured thereto are then bent, inwardly and downwardly to double back upon themselves as indicated at |06 in Fig. 9 to provide shoulders .|01 and |08 which press against the outer side of the closure and securely retain the closure in position on the internal shoulder |00. It will thus be evident that the end edge of the inner convolution .32 provides the shoulder |00 upon which the end closure |05 seats and that the end edges of the outer convolutions |0| and |02 of the wound body provide the shoulders |01 and |08 which press against the outer side of the end closure and retain it in position. The opposite end of the container body maybe closed in a similar manner after 'the container has been filled with the desired contents.

To facilitate the spinning over of the outwardlypextending end portions of the outer convolutions to fold the same back upon themselves and provide the shoulders |01 andv |08 which bear against andl secure the end closure in position on the inner recessed shoulder |00, the .spinning operation is preferably effected prior to the complete setting of the adhesive securing the outer convolutionsto'gether and securing the label vto over, the end edge |08 of the outer convolution` |0| lies in substantially thev same plane 'as the. end edge |01 of the convolution |02 andbears against Athe closure member |05 to assist the shoulder |01 in securing the closure member :in position. Any heat generated by friction during the spinning operation also tends to also f'f'acilitate'the foldingoperation and lengthening df the outerfconvolution |0|'.

.In Figs. 5 and 6 there is shown a preferred form .of-apparatus for effecting the folding of the outwardly extending convolutions of the wound 'or lap back-upon themselves and provide the .shoulder portions |01 and lilwhich` retain the dammi and removal of the container bodies. As shown the spinning head |20 comprises a casting h aving a relatively deep circular groove |22 therein the outer diameter of which is substantially the same as the outer diameter of the container body so as to t closely around the outer end of the tubular body and the inner diameter of which is such as to cause the folded-down portion of the container wall to double or lap back upon the adjacent portion of the body wall and be depressed tightly against this adjacent portion lof the wall as shown in Fig.'8. To assist in guiding the end of the tubular container into the groove |22 when the spinning head and chuck are moved towards each other to effect the folding operation the outer edge of the groove is provided with a rounded bevel as indicated at |23 in Fig. 5.

The folding or lapping operation is effected by a plurality of dies |25 which are arranged radially of the axis of the spinning head |20 and extend entirely across the groove |22 adjacent the top portion |26 thereof. In the illustrated embodiment the dies |25 are in the form of elongated pins Whichextend through suitable openings or sockets |21 and |28 provided in the flange .portion |29 and the body portion |30 of the spin- 'longitudinal axis thereof for a purpose to be hereinafter described, and the outwardly extending end portions |3| are provided with a flattened surface |34 to provide for effecting such rotation of the pin by the use of a suitable tool. 1-he portion of each pin which extends across the groove |22 is provided with a slot |35 which extends transversely of the pins and in the direction of the groove.` To provide for folding over the end of the container body when the spinning head with the dies therein is pressed against the body end the slots |35 are arcuate .shaped intransverse4 cross-section as shown in Fig. 5 and form curved working surfaces |38' whichextend v from the outer Wall |31 `to the inner wall |38 of the groove |22. Thusas the rotating dies are pressed against the endl of the container body the curved working surfaces |38 of. the slotsV 35 cause the end wall portion 'of the .body t`o bend over' and. -downwardly and tobe pressed against the adjacent body wall portion by the inner.wall

|38 of the-groove.

described above the dies or pins |25 are rotatable within the openings or sockets |21 and |28, andthus the angular positioning ofthe slots |35 about the axis of the pins may be adjusted. Totfpreventtthe edge of the--slottedi` portions |35 of the. dies |25 from cutting into the paper material upon rotation of the spinning y headand also to facilitate and improvethe foldcontainer body to -cause these portions to double to be rotated by any suitable means not shown.

suitable chuck and mechanism, also not shown,

ing operation o f the dies the angular positioning of the pins |25 is so adjusted that the working surfaces |36 of the `slots |35 extend at an angle toa plane normal to the axis ofJ the spinning head as shown in Fig. 6 to thereby provide Iinclined or sloping surfaces which operate upon the end of the tubular .b ody. The working surfaces |38 are thus arranged to extendfat an angle with respect to the plane of the end edge of a tubular body adapted. to be received within the groove |22', andas shown in Fig. 6 in which the direction of rotation ofthe spinning head and dies is indicated by the arrow the inclination or angularity of the working surfaces is such that the leading edge |40 of the slots inclines upwardly away from the end of a tubular body adapted to be received within they groove |22. The dies may bev adjusted to any desired degree of slope or inclination of the working surfaces by rotating the pins |25 in the socket; openings |21 and |28, and the pins are retained in the desired adjusted positioning by means of set screws |4| which thread into the spinning head and engage the pins |25. The set screws |4| also prevent the dies Vfrom working outwardly of the spinning head and maintain the slots in proper positioning With respect to the groove |22 of the spinning head. l

In Fig. 9 of the drawings there is shown a Imodified .form of the invention in which the end closure comprises a cup-shaped member having upwardly extending side iianges |5|. The cup-shaped closure |50 rests upon the shoulder |52 jprovided bythe inner convolution |53` of reduced length with the flanges |5| extending towards the outer end of the container body. The outer convolutions |54 and |55 are then folded over and pressed back against the side flange |5| of the closure and provide shoulders |56 and |51 which press against the bottom of wall convolutely wound containers having end `closures inwardly recessed thereon comprising the steps of feeding a web of paper materialhaving a width sufficient for forming a plurality of body blanks arrangedlside by side and a length sufficient for forming an inner and a plurality of outer convolutions of the wound container body, cutting said web to provide a'plurality of elongated transversely spaced slots in the forward end of the web, slitting said web through- 5,0

said slots Yto provide a plurality `of body blanks each having a slotted portion at a sideedge thereof, said slots providing a portion of reduced width` inthe leading end of each of said blanks 'which forms the inner convolution, said portion of reduced width having a length suflicient `to Aform said inner convolution of ,-the wound container body, winding said blanks into i convolute container form with said portions of reduced width onthe insideto form container bodies having an inner recessed shoulder at an lend ofthe bodies adapted to receive an end closure thereon, adhesively securing said bodies in wound form with the adhesive extending to the end edges of the outer convolutions, inserting af closure member in said end of the bodies to seat on said recessed shoulder, and spinning the outwardly extending portions of the outer convolutions prior to complete setting of said `adhesive to fold the end edges offsaid portions into retaining engagement with said closure member. I

2. A process of the character described for forming from paper material or the like multiwall convolutely wound. containers having end closures inwardly recessed thereon comprising the steps of intermittently feeding blanks of paper material having a size suitable for winding into the form of said multi-wall convolute container bodies and a length suicient for to provide a portion of reduced width at the leading ends of the blanks which forms the inner convolution, said portion of reduced width having a length sufficient to form said inner convolution of the wound container body, winding said blanks intoconvolute containerform with said portion of reduced width on the inside to form container bodies eachhaving an inner recessed shoulder at an end of the formed bodies `adapted to receive an end closure thereon, adhesively securing said bodies in'wound form with the adhesive extending to the end edges of the outer convolutions, inserting a closure member' in said end of the bodies to seat on said recessed shoulder, andoperating upon the outwardly extending portions of the outer convolutions prior to complete setting of said adhesive with guiding and forming surfaces inclined with respect to the end edge of the ,bodies to fold the end edges of said portions of the outer convolutions into retaining engagement with said closure member. 3. In a process of the character described for forming container bodies from paper material or the like in which a web of paper material having a width sufficient for forming a plurality of container bodies is slit into a plurality of body blanks arranged side by side and said plurality of blanks are wound on amandrel into the form of multi-Wall convolute container bodies, the steps which comprise cutting said web to provide a plurality of spaced elongated slots positioned to lie along a part of the marginal edge of each of said blanks at the forward ends thereof to thereby provide a portion of reduced width in the leading ends of the blanks, said portion of reduced width having a length sufficient to form an inner convolution of the wound container body, and winding said'plurality of blanks simultaneously on said mandrel into convolute lcontainer formwith said reduced portion inwardly and next to the mandrel to provide container bodies having aninner convolution havhaving a width suicient for forming a plurality ofl container bodies is slit into a plurality of body blanks arranged side' by side and said plurality of blanks are woundon a mandrel into the form of multi-wall convolute container bodies, the combination of means for cutting said web to provide a plurality of spaced elongatedslots positioned to lie along a part' of the marginall edge of said blanks at the forward ends thereof to thereby provide a portion of reduced width in the leading ends of the blanks, said portion of reduced width having a length sufficient to form volute container form with said reduced portion inwardly and next to the mandrel to4 provide container bodies yhaving an inner convolution 'having a recessed shoulder adapted to receive an endv closure thereon.

5. An apparatus of the character described for forming from paper `material o the like multiwall convolutely wound container bodies adapted to receive end closures inwardly recessed thereon comprising means for feeding a web of paper material having a Width sufficient for forming. a pluralityof body blanks arranged side by side, means for'cutting said paper web to simultaneously provide a 'plurality of body blanks each having a forward'marginal portion cut away to provide a portion of reduced width at the leading ends of the blanks, said blanks having a length .providing forl forming a plurality of convolutions when wound intocontainer form and said portion of reduced width having a length suicient to form at least one convolution of the wound container body, and means for winding said cut blanks simultaneously into convolute container form with said portion of reduced width on the inside to simultaneously form a plurality of container bodies each having an inner convolution of less length than an outer convolution to thereby provide an inner recessedl ,shoulder at an end of the formed bodies.

6. An apparatus of the character described for forming `from paper material or the like multiwall convolutely wound container bodies adapted to receive end closures inwardly recessed thereon comprising means for feeding blanks of paper material having a size suitable for winding into the form of said multi-wall convolute container bodies, means coordinated with the operation of l having a length sufficient to form at least one convolution of the wound container body and th'e remainder of said blanks having a substantially .A

uniform greater width and a length sufficient to form a plurality of additional convolutilons, means for winding said blanks into convolute container form with said portion of reduced width on the inside to form containerv bodies --each having an innerrecessed shoulder at an ,end` of the formed bodies, and means' effective ,jfor applying adhesive across the entire width of `z`vsaid blanks including the wider portion thereof Y to adhesively secure the "bodies in wound form and provide adhesive on the portions of the body walloutwardly of said recessed shoulder'.

7 An apparatus of the character described for .forming from a jumbo roll of paper Amaterial or the like multi-wall convolutely wound container bodies adapted to receive end closures inwardly recessed thereon comprising means for intermittently unwinding and feeding a web of paper material from said iumbo roll, means for cutting said w`eb into body blanks, means for operating upon said web with a shearing action during dwell of. said unwinding and feeding operations to eilect a substantially uniform reduction in Width of a portion of the body blanks at the leading ends thereof, saidv blanks having a length providing for forming a plurality of convolutions when wound into containerform and said= portions of reduced width having' a length sufficient to form at least one convolution of the wofund containerbody, and means for winding said cut blanks vinto convolute container form with said portions of reduced width on theinside to pro- 8. Ari apparatus of the character described for` forming' container bodies ,from paper material or ythe like comprising means for intermittently feeding a blank of paper material having a size suitable for winding into the form of multi-wall convolutely wound containerbodies, means for operating upon said web with a shearing action during dwell of said feeding operation to simultaneously provide al cut-away portion at each of the forward marginal sides4 of each of said blanks to thereby provide a portion having its width substantially uniformly reduced at both sides of the leading ends of the blanks, said portion of reduced width having a length sufficient to form at least'one convolution of the wound container body, and mandrel means for winding said blanks into convolute container form with said reduced portions next to the mandrel to form container bodies having an inner convolution with a recessed shoulder adapted to receive an end closure thereon at each end of the wound body.

9. An apparatus of the character described for forming from paper material or the like container bodies adapted to receive end closures inwardly recessed thereon comprising means for feeding blanks of paper material having asize suitable for winding into the form of a multiwall convolutely Wound container bodies, mandrel means for receiving said blanks and windingthe same into the form of said multi-wall convolute container bodies, means including an elongated shearing knife positioned in a plane extending substantially parallel with the direction of feed of said blanks for cutting an elongated slot in said blanks adjacent' a side edge thereof to provide a portion on said blanks of reduced width, and' means coordinated with the operation of said feed means for effecting operation of said shearing .knife to provide said portion of reduced width at the leading end of said blanks and of a predetermined length sumcient to form an inner convolution of the wound container bodies to thereby provide for winding containerbodies having a recessed inner shoulder at an end of the wound body.

10. An apparatus of the character described for forming from Apaper material or the like container bodies adapted to receive end closures inwardly recessed thereon comprising means for i gated slot of predetermined length' in said blanks adjacent a side edge thereof to provide a portion on said blanks of reduced width, and means coordinated with the operation of said feed means and operable during periods of dwell of said feeding means for effecting operation of said shear-- ing knife to providel said portion of reduced width at the leading ends of said blanks, said portion of reduced width having a length sumcient to form an inner convolution of the wound container bodies to thereby provide for winding container bodies having a lrecessed inner shoulder at an end of the wound body.

11. An apparatus of the character described for forming from paper material or the like container bodies adapted toreceive end closures inwardly recessed thereon comprising means for feeding blanks of paper material having a size suitable for winding into the form of multi-wall convolute container bodies, mandrel means for receiving said blanks and winding the same into the form of said multi-wall convolute container bodies, a. cross-shaft extending substantially transversely to the direction of feed of said blanks, a plurality of elongated shearing knives mounted on said cross-shaft and extending in planes substantially parallel with the direction of feed of the blanks, said shearing knives providing for cutting elongated slots of predetermined 15 container bodies to thereby provide container bodies having recessed inner shoulders atvthe ends thereof.

WALTER E. SOOY. RUDOLF WILLIAM VON SYDOW. 

